雅思大作文舉例只會(huì)用if？是時(shí)候換換啦
來(lái)源：環(huán)球教育
小編：長(zhǎng)安 892今天北京環(huán)球教育王洪亮老師跟大家分享一個(gè)老生常談的知識(shí)點(diǎn)，什么叫做條件狀語(yǔ)從句呢？
通俗來(lái)講，往往由引導(dǎo)詞 if 或 unless 引導(dǎo)的狀語(yǔ)從句叫做條件狀語(yǔ)從句。在英文中，條件是指某一件事情實(shí)現(xiàn)之后，其它事情才能發(fā)生，通常譯作“假如”。在雅思寫作中，條件狀語(yǔ)從句十分好用，拿過(guò)來(lái)就能用，可以起到很好的突出強(qiáng)調(diào)作用。
一提到條件句，很多同學(xué)馬上就會(huì)想用if來(lái)引導(dǎo)。首先，我們一起來(lái)看以下七個(gè)句子：
Part A：
1.You can borrow my dictionary if you return it before you go home.
2.You cannot go to university if you do not have good grades.
3.Pollution will get worse if we continue to live in a throwaway society.
4.Many developed countries are willing to waive the Third World debt if the money is reinvested in education and medicine.
5.Some countries will never be able to rectify their deficits even if they work hard.
6.Computers are difficult things to understand, even if you read a lot of books about them.
7.Crime is a problem, even if you go to relatively safe countries.
這些句子都是由if 引導(dǎo)的條件句（ even if 可以是條件也可以是讓步狀語(yǔ)從句），這些句子固然很好，但是不是有些千篇一律呢？
條件狀語(yǔ)從句不僅僅限于if，下面給大家介紹一些可以替換if 的方式。我們分別用以下短語(yǔ)來(lái)替換上面七句話中的if ：
providing that （假如 ） / unless (除非） / as long as （只要） / on condition that （ 如果， 條件是 ）/ no matter how （不管怎樣）/ however many （ 無(wú)論多少）/ wherever （無(wú)論什么地方）
第一句話可以直接用providing that ( 也可以用provided that ) 來(lái)替換if
1.You can borrow my dictionary providing that you return it before you go home.
第二句話可以把if not 換成unless
2.You cannot go to university unless you have good grades.
第三句話可以直接用as long as 替換if
3.Pollution will get worse as long as we continue to live in a throwaway society.
第四句話可以直接用on condition that 替換if
4.Many developed countries are willing to waive the Third World debt on condition that the money is reinvested in education and medicine.
第五句話用no matter how 直接替代if
5.Some countries will never be able to rectify their deficits even if they work hard.
第六句話用however many 直接替代even if
6.Computers are difficult things to understand, however many books you read about them.
第七句話用wherever 直接替代even if及后面的內(nèi)容，改寫為
7.Crime is a problem, wherever you go.
Part B：如果我們強(qiáng)調(diào)的重點(diǎn)是條件里的內(nèi)容，那么我們可以把條件句放在句子的前面?，F(xiàn)在試著把剛剛七個(gè)句子的強(qiáng)調(diào)內(nèi)容提前：
1.Providing that you return it before you go home, you can bor-row my dictionary.
2.Unless you have good grades, you cannot go to university.
3.As long as we continue to live in a throwaway society, pollu-tion will get worse.
4.On condition that the money is reinvested in education and medicine, many developed countries are willing to waive the Third World debt.
5.No matter how hard they work, some countries will never be able to rectify their deficits.
6.However many books you read about them, computers are difficult things to understand.
7.Wherever you go, crime is a problem.
Part C：練習(xí)
現(xiàn)在到大家自由發(fā)揮的時(shí)間了，大家根據(jù)上面七個(gè)短語(yǔ)，來(lái)試著補(bǔ)充以下句子 ：
1.British universities will accept students from abroad __________
2.Working for a large company can be a fulfilling experience ____
3.Most banks are happy to lend customers money _____________
4.The government will reduce income tax ____________________
5.The environment situation will continue to worsen ____________
6.There will always be long waiting lists at our hospitals ________
7.Traveling helps you understand more about the world around you ______
Part D：此外，一些名詞也可以表示條件，比如prerequisites ( n 前提，先決條件 ） conditions ( n 條件 ） re-quirement ( n 要求，條件 ）
我們一起來(lái)看以下三句話，來(lái)進(jìn)行填空練習(xí)
1.Being able to drive is one of the _____ of the job of salesmen. （prerequisites)
2.Before you accept a job, it is important that you agree with the ______ of the contract. ( conditions )
3.It is a _____ of the university that you attend an interview. ( requirement )
Part E：if 除了可以表示條件外，還可以表示虛擬。條件可以是事實(shí)，但是虛擬表示與事實(shí)相反，不可能實(shí)現(xiàn)。虛擬語(yǔ)氣有三種基本類型：與現(xiàn)在事實(shí)相反，與過(guò)去事實(shí)相反，與將來(lái)事實(shí)相反。
這三種情況所對(duì)應(yīng)的句子結(jié)構(gòu)和時(shí)態(tài)是不同的：
1.與現(xiàn)在事實(shí)相反：if + 一般過(guò)去時(shí)，主語(yǔ) + would + 動(dòng)詞原形
例句：如果我是你，我就會(huì)接受他的建議
If i were you, I would accept his suggestions.
2.與過(guò)去事實(shí)相反：if + 過(guò)去完成時(shí) (had done)，主語(yǔ) + would + have done
例句：如果你昨天在這里，就能見到他了
If you had been here yesterday, you would have seen her.
3.與將來(lái)事實(shí)相反：if +一般過(guò)去時(shí)，主語(yǔ)+would +動(dòng)詞原形
例句：如果太陽(yáng)不見了，你就會(huì)贏得大獎(jiǎng)
If the sun were to disappear, you would win the jackpot.
所以我們看，其實(shí)條件狀語(yǔ)從句可以有很多種不同的表達(dá)，大家可以在平時(shí)練習(xí)的時(shí)候變化自己的表達(dá)方式，豐富自己的文章。
